Dimetylfumara

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Dimethylfumarate is a so-called ester of methanol and the organic acid fumaric acid. DMF can be seen without any help of microscopes and is white and solid. It can easily evaporate at room temperatures. The substance melts slightly above 100 ° C. DMF contains a reactive double bond and can be irritating to skin and eyes, causing rashes and sometimes even burns. DMF has also been used for the treatment of psoriasis, and as a preservative against mold. During the fall and winter of 2008, DMF was found in shoes, riding helmets, furniture and toys within the EU. DMF shall not exist in Swedish chemical products registered as an ingredient or medicament according to FASS. (1) The substance was banned in Swedish products on May 1, 2009. (2)

DMF has caused so-called "sofa-rashes" (soffeksem) and the substance is allowed for use in some countries, the substance is for example commonly used in China. According to the newspaper Sydsvenskan hundreds of cases of eczema in northern Europe been linked to furniture from China. The problems are caused by the DMF which functions as an anti-mold agent used for the long sea voyages. (3)

When the substance was added to products for long journeys it is not visible in the ordinary content description of the product. This means that the client ordering the products does not know if DMF is in the product until after a analysis has been made of the produkterna. (4)

The prohibition of the use of DMF was enforced on 1 May 2009 and means that products containing DMF (in concentrations higher than 0.1 mg / kg) should be withdrawn from the market and recalled from consumers. It is therefore essential that companies assure themselves that the goods they handle (eg, furniture and shoes) do not contain DMF. The customers who bought a product containing DMF in a greater than 0.1 mg / kg should be able to return the product and receive a refund from the seller. (5) In addition, consumers are to be informed about the risks of DMF. The Swedish chemical agency (Kemikalieinspektionen) will have regulatory responsibility over the ban. (6)

The TV show PLUS ordered Swerea IVF laboratory to tested six of the most common jeans brands in Sweden. It's Nudie, Miss Sixty, Wrangler, Cheap Monday, Crocker and Lee. PLUS let Swerea examine the clothes and look for various chemical substances that do not belong there. The result is remarkable. In three of the six pairs, the concentrations of anti-mold agent are higher than the accepted limit of 0.1 mg / kg. DMF was found in jeans models of Lee, Wrangler and Nudie. In Nudie jeans the content of DMF was up to five times higher than allowed. (7)

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